Colour-filled detail

Enamel Filled Metal RFID Cards

Enamel fill gives engraved metal marks clear, durable colour without turning the whole card into a generic printed surface. It is a sequence, not a print: engrave the recess, fill it with colour, cure, and level flush — which is why it excels at emblems, borders, and tier details with defined boundaries.

Production detail views

Four enamel fill references for planning the finished metal card.

Navy insets on copper, thin-edge enamel detail, a colour-option trio, and dark-metal accents — fill work across the range.

Thin brass card with a small dark enamel mark

Three metal samples with restrained enamel details

The recess is the dam — fill follows engraving.

Enamel fill is a sequence: the mark is engraved first so the recess forms a dam, colour is filled into it, cured, and levelled flush with the surface. That is why fill zones need engraved boundaries, and why fine, open linework fills poorly — the recess controls where colour can and cannot go.

Prove visual and technical performance together.

Approve engraving geometry, fill adhesion, colour tolerance, and the finished sample's surface feel.

Best uses

Engraved logos, emblems, borders, tier marks, and small high-impact colour details.
Premium metal card programs where the finish, data zones, and RF construction need coordinated approval
Projects with a defined artwork file, variable-data need, and reader or scan validation route

Frequently asked questions

How is colour applied to an engraved metal card?

In sequence: the mark is engraved so the recess forms a boundary, the colour is filled into it, cured, and levelled flush with the surface. The result sits in the metal rather than on it.

What designs suit enamel fill best?

Emblems, borders, tier marks, and short graphic elements with closed shapes. Fine, open linework fills poorly because the recess is what holds the colour — geometry is confirmed at proof stage.

Does the engraved fill zone affect RFID?

The recess is shallow relative to the body, but like all engraving its depth and position are agreed with the shielding stack and antenna-safe area before the fill sample is approved.

Specification

Format	CR80 85.6 x 54 mm by default; custom outlines after RF review
Thickness	0.3 mm to 0.8 mm depending on construction
Minimum order	None — single samples to production runs
Production time	About one week after artwork and sample approval
RF construction	Antenna, ferrite or hybrid shielding, chip, metal faces, and edge stack specified together
Chip routes	NFC tag, standard HF, high-security AES HF, LF compatibility, and selected UHF by reader test
Marking options	Laser etch, deep engraving, UV print, white ink, enamel fill, QR, serial, and controlled cut-through
Approval flow	Finish sample, encoded working sample, reader check, pre-production approval
Primary route	Enamel fill
Best use	Engraved logos, emblems, borders, tier marks, and small high-impact colour details.
Approval check	Approve engraving geometry, fill adhesion, colour tolerance, and the finished sample's surface feel.